[WIP] allow using the winbar instead of statusbar as a window picker

[davidsierradz]

WIP

Hi. I'm using vimpostor/vim-tpipeline with laststatus=0. There is some kind of problem when nvim-tree.lua populates the different statusbars in each window, vim-tpipeline doesn't like it. I also use s1n7ax/nvim-window-picker to pick a window when opening a file from telescope.nvim. They added an option to use the winbar instead of the statusbar to select the window. Could we also do something similar in nvim-tree.lua? This PR is some hack I did to test the idea, by adapting (stealing) their code.

PS. Ideally, we could abstract the window_picker interface to hook into an arbitrary window picker implementation and reuse the nvim-window-picker function (or another, like t9md/vim-choosewin)

PS2. nvim-window-picker is inspired by nvim-tree.lua, so it comes full circle =)

Thanks!

[alex-courtis]

I like the idea. There's doesn't appear to be anything specific to winbar other than the name of the option, which is good.

PS. Ideally, we could abstract the window_picker interface to hook into an arbitrary window picker implementation

Yes, this. It will allow much greater flexibility and minimises the scope of the changes.

I'm out of time and will review the complete PR ~next weekend.

[alex-courtis]

Looks good.

PS. Ideally, we could abstract the window_picker interface to hook into an arbitrary window picker implementation

Let's make this really abstract, with picking done by calling a default (current functionality) function or the user's.

I imagine the user's function should return the HL groups as well as executing the select.

[davidsierradz]

Replaced by 1782